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Conférence - G. DEUTSCHER - Superconducting gap and pseudo-gap - Académie des sciences

Conférence de Guy DEUTSCHER intitulée Superconducting gap and pseudo-gap 00:00:00 Introduction 00:03:34 The discovery of the pseudo-gap 00:06:54 Many other pseudo-gap effects 00:07:29 Bi 2212 tunneling pseudo-gap 00:08:45 Condensation energy reduced by PG states 00:09:20 Phase diagrams of HTS Cuprates 00:10:24 Diverging views on the pseudo-gap 00:12:00 Two experiments testing the superfluid condensate 00:13:36 Measuring coherence by Point Contact Spectroscopy 00:14:38 Andreev – Saint-James (1964) reflections: an excellent tool 00:16:08 The beauty of ASJ reflections 00:16:28 Optimally doped YBCO: ASJ, Tunneling scales equal 00:17:43 Underdoped YBCO: ASJ, Tunneling scales different 00:18:39 In OD Bi 2212 PCS and STS scales are different 00:19:16 Two energy scales Δc and Δp , Deutscher 1999 00:20:42 Interference effects 00:21:02 Two energy scales confirmed, Hufner 2008 00:21:15 Two energy scales also seen in STS Bi 2212 00:22:01 Pseudo-gap states reduce drastically the condensation energy 00:22:34 Jacques Friedel was right 00:23:43 Some open questions © Académie des sciences - Tous droits réservés